High-speed railway nose-shaped metal sound barrier unit board

A high-speed railway and sound barrier technology, applied in buildings, noise absorption devices, etc., can solve the problems of damp failure of sound-absorbing materials, poor sound-absorbing effect, easy to float into rainwater, etc. Maintenance cost, the effect of not being susceptible to moisture failure

Inactive Publication Date: 2011-11-30
常州西南交大金路轨道交通科技发展有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing problems are: 1. Because the aluminum alloy panel is straight, the thickness of the inner cavity of the unit plate is limited and fixed, and the sound absorption effect on the medium and low frequencies is poor; and only the sound absorption effect of the sound-absorbing material and the sound insulation effect of the fiber cement board, There is no form of scattering noise reduction, which also leads to unsatisfactory noise reduction effect, and its noise reduction effect on

Method used

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  • High-speed railway nose-shaped metal sound barrier unit board
  • High-speed railway nose-shaped metal sound barrier unit board
  • High-speed railway nose-shaped metal sound barrier unit board

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Embodiment Construction

[0023] figure 1 , image 3 As shown, a specific embodiment of the present invention is a high-speed railway nose-shaped metal sound barrier unit plate, including an aluminum alloy panel 1, an aluminum alloy back panel 9, and a gap between the aluminum alloy panel 1 and the aluminum alloy back panel 9. Fiber cement board 13, sound-absorbing material 14 and sound-absorbing material fixing device 16 are characterized in that: the middle and upper part of the aluminum alloy panel 1 is a nose-shaped protrusion 2 protruding outward; The directional part is arc-shaped, and the bottom 3 in the transverse direction is provided with sound-absorbing material 15; the bottom 3 of the nose-shaped protrusion 2 and the parts other than the nose-shaped protrusion 2 on the aluminum alloy panel 1 are provided with sound holes 4.

[0024] figure 2 It is shown that the aluminum alloy back plate 9 of this example is pressed with longitudinal ribs 10 .

[0025] figure 1 It is shown that the low...

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Abstract

The invention discloses a nose-shaped metal sound barrier unit plate for a high-speed railway. The unit plate comprises an aluminium alloy face plate (1), an aluminium alloy back plate (9), a fiber cement plate (13) between the aluminium alloy face plate (1) and the aluminium alloy back plate (9), sound absorbing materials (14) and sound absorbing material fixing devices (16), wherein a nose-shaped bulge (2) protruding outwards is arranged in the middle-upper part of the aluminium alloy face plate (1); the slant part of the nose-shaped bulge (2) is arc-shaped; a transverse bottom (3) is provided with sound absorbing materials (15); and sound holes (4) are arranged on the bottom (3) of the nose-shaped bulge (2) and on the parts except the nose-shaped bulge (2), on the aluminium alloy face plate (1). The unit plate has a strong barrier effect on sounds and has a good noise reduction effect.

Description

technical field [0001] The invention relates to a high-speed railway nose-shaped metal sound barrier unit plate. Background technique [0002] With the rapid development of high-speed railways in our country, the noise pollution generated when high-speed trains pass through residential areas has seriously affected the normal work and rest of residents, and the construction of sound barriers is an effective control measure. [0003] There are two problems in the construction of high-speed railway sound barriers: first, the mechanism of high-speed railway noise generation is complex, and the main sound sources of external radiated noise are wheel-rail contact parts, bogies, pantographs and their bases, and aerodynamic forces at vehicle connections. Noise, sound pressure is more significant in low frequency, middle frequency and high frequency. Second, the sound barriers built along the high-speed railway are relatively close to the rails. When the train passes by at high spee...

Claims

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Application Information

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IPC IPC(8): E01F8/00
Inventor 肖新标周信潘建军周全法顾青吴柏青金学松
Owner 常州西南交大金路轨道交通科技发展有限公司
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